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Kochsandorite: CaAl2(CO3)2(OH)4·H2O
Comments: White fibers of kochandorite on coal-marl matrix. Location: Mány coal field, Tatabánya, Hungary. Scale: See Image. © Jeff Weissman / Photographic Guide to Mineral Species
Comments: Pearly circles of radiating white microcrystals of kochsandorite on coal. Location: Many coal deposit, Bicske-Zsambeki Basin, Tatabanya. Scale: 2.5x1.7x1.1 cm. © Richard Dale / Dale Minerals
Koechlinite: Bi2MoO6
Comments: Greenish yellow crystal of koechlinite on quartz. Location: Adam Heber Mine, Neustädtel, Schneeberg district, Erzgebirge, Saxony, Germany. Scale: Picture size 1 mm. © Thomas Witzke / Abraxas-Verlag
Koenenite: Na4Mg4Cl12·Mg5Al4(OH)22
Comments: Koenenite with cleavage planes. Location: Bergmannssegen-Hugo Mine, Lehrte, near Hanover, Lower Saxony, Germany. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag
Kogarkoite: Na3(SO4)F
Comments: Pale green granular mass of kogarkoite with yellow native sulfur. Location: Vulcano, Sicily, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kokchetavite: KAlSi3O8
Comments: Fragment of eclogite containing kokchetavite which occurs as inclusions in clinopyroxene and garnet (see inset BSE images). Location: Kumde-Kul Area, Kokchetav Massif, Kokchetav Oblast', Kazakhstan. Scale: Specimen Size 6x6x6 mm. © Sergey Vasiliev / Systematic Mineralogy
Koktaite: (NH4)2Ca(SO4)2·(H2O)
Comments: Tan to white scaly coating of koktaite. Location: Zastavka, near Brna, Vychodocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kolarite: PbTeCl2
Comments: Steel-gray, metallic, massive, polished fragment of kolarite embedded in epoxy. Location: Oktyabr'sky Mine, Noril'sk, Putoran Mts, Taymyrskiy Autonomous Okrug, Eastern-Siberian. Scale: See Image. © Rruff Database
Kolarite: PbTeCl2 Radhakrishnaite: PbTe3(Cl,S)2
Comments: Kolarite (1) and radhakrishnaite (2), replacing altaite (white) in galena (ight grey). (CanMin, v23:501). Location: 1500 m level, Kolar gold deposit, India. Scale: Scale Bar 0.02 mm. © Canadian Mineralogist
Kolbeckite: ScPO4·2(H2O)
Comments: Spherical ball of acicular kolbeckite on matrix. Location: Gleichenberger Klause, Bad Gleichenberg, Steiermark, Austria. Scale: Specimen size 1.5 mm. © John Veevaert